power quality monitoring · meters for the demand/supply of active/reactive power, high/low tariff,...

COMBINED POWER QUALITY AND ENERGY CONSUMPTION MEASUREMENT

POWERQUALITYMONITORING

PQ3K - PQ5K

Certified by

CONFORMITY REPORT VIA BROWSERWITHOUT EXTRA SOFTWARE

Traditionally, power quality monitoring is only conducted as a reaction to trouble such as device failure, plant malfunctions, process interruptions or communication breakdowns. However, all these problems cost money and nobody wants to experience the same thing again just to be able to create a corresponding record for analysis. Therefore, the biggest advantage of continuous power quality monitoring is that users put them-selves in a position to proactively build up their knowledge thus increasing system availability.

DRANETZ PQ3K / PQ5K helps to detect trouble before it can do any damage and to provide data for the identification of the root cause in case an event actually occurs. DRANETZ PQ3K / PQ5K is a Class A device according to the IEC 61000-4-30 Ed.3 power quality standard. It can thus provide reliable and comparable information for regulatory agencies, negotiations with energy suppliers or internal quality control. Conformity reports on various standards can be generated directly via the website of the device.

Comprehensive instrument for power quality monitoring in electric mains

Language-specific plain text menu navigation

Topical arrangement of measured value information for quick data access

Service area for maintenance and commissioning

INTUITIVE

Certified power quality monitoring according to IEC 61000-4-30 Ed. 3, class A

Acquisition of energy consumption: Meters and load profiles

Plant condition monitoring

MULTIFUNCTIONAL

Applicable in all network configurations without hardware variance

Freely selectable measured variables for mean values and meters

Freely definable alarm conditions with summary alarm and recording

FLEXIBLE

Combinable device design (functionality, interfaces, I/Os, auxiliary energy)

SCALABLE

High resolution, colour TFT display for the pin-sharp indication of measured data

Consistently visible status information (alarms, password protection, data recording, time/date and much more)

Clear Design

CLEAR

POWER SYSTEM MONITORING

POWER QUALITY

AVOIDING POWER QUALITY PROBLEMS - THROUGH CONTINUOUS MONITORING Disruptions of the energy supply may result in production or equipment outages. Often people do not react until great financial damage has been caused. Yet, many of these incidents could be avoided if the signs were recognised in the continuous monitoring of the situation.

Any form of power quality monitoring provides both a statistical evaluation allowing the comparison with standards (e.g. EN 50160) or supply contracts as well as records of events in the grid (e.g. voltage dips). This facilitates the analysis of causes and effects.

DRANETZ PQ3K / PQ5K stores the acquired power quality data in the standardized Power Quality Data Interchange Format (PQDIF) according to IEEE 1159.3.

The storage principle provides daily PQDIF files containing either statistical data, histograms or event recordings. The creation is done shortly after midnight for the past day.

All these files may also be generated manually via the service menu of the device at any time for the ongoing day.

POWER QUALITY EVALUATION DESCRIPTION BENEFIT

Statistical evaluation All relevant parameters of the supply voltage are monitored, statistically averaged and compared to specified values. This way, one can either prove compliance or call attention to possible problems.

In addition to the voltages, also magnitude, harmonic content and unbalance of currents are recorded. But, a statistical evaluation is carried out only if corresponding limit values exist, for example for harmonics in IEEE 519.

Verification of the compliance with standards (e.g. EN 50160) or contracts between energy suppliers and energy consumers.

Users may adapt the specified values as they desire.

By observing changes in the results, one can detect any deterioration of power quality early on and identify the causes. Introduced improvements can be verified immediately.

Recording of malfunctions All voltages are monitored for disturbances, such as dip, interruption or swell. These incidents are registered as event. A statistical evaluation is not required because there is no limitation for such events.

An event recording comprises the waveshape of all voltages and currents upon occurrence of the event as well as the course of the corresponding RMS half cycle values for the entire duration of the event (max. 3 min.).

The evaluation of malfunction recording lets you identify the cause of the malfunction and - at best - establish a correlation with the events witnessed (such as outage of control systems or equipment). Suitable remedies may then be derived.

POWER QUALITY DATA EXCHANGE

POWER QUALITYPOWER SYSTEM MONITORING

Avoiding power quality problems

MONITORED VOLTAGE PHENOMENON CAUSES POSSIBLE CONSEQUENTIAL PROBLEMS

Mains frequency • Loss of power generators • Large load changes

• Instability of the mains power supply

Magnitude of supply voltage • Changes in grid load • Disruption of equipment • System shut-down • Loss of data

Flicker and rapid voltage changes (RVC) • Frequent load changes • Start of engines

• Flickering lighting • Impairment of the performance of exposed people

Supply voltage dips and swells • Large load changes • Short circuit, contact to earth • Thunderstorm • Power supply overload • Feed-in of renewable energies such as wind or photovoltaic energy

• Disruption of equipment such as control or drive systems • Operational interruption • Data loss in control systems and computers

Voltage interruptions • Short circuit • Blown fuses • Component failures • Planned supply interruption

• Production stoppage • Process interruptions • Data loss in control systems and computers

Supply voltage unbalance • Uneven load on phases due to one or two-phase consumers

• Current in the neutral conductor • Overload / overheating of equipment • Increase of harmonics

Voltage harmonics • Non-linear loads such as frequency converters, rectifiers, switching power supplies, arc furnaces, computers, fluorescent tubes etc.

• Reduction of machine efficiency • Increased energy losses • Overload / overheating of equipment • Current in the neutral conductor

Voltage interharmonics, mains signalling voltage on the supply voltage

• Frequency converters and similar control devices

• Flicker • Malfunction of ripple control

Current (magnitude, harmonics, interharmonics, events)

In parallel with the voltages the corresponding current values are recorded in the same manner.

Current course during voltage dips in the mains


POWER QUALITY

MEASURED VALUES

MEASURED VALUE GROUP APPLICATION

INSTANTANEOUS VALUES

V, I, IMS, P, Q, S, PF, LF, QF ... Transparent monitoring of present system state

Angle between voltage phasors Fault detection, connection check, sense of rotation check

Min/max of instantaneous values with time stamp Determination of grid variable variance with time reference

EXTENDED REACTIVE POWER ANALYSIS

Total reactive power, fundamental frequency, harmonics Reactive power compensation

cosφ, tanφ of fundamental frequency with min values in all quadrants Verification of specified power factor

HARMONICS ANALYSIS (ACCORDING TO IEC 61000-4-7)

Total harmonics content THD V/I and TDD I Evaluation of the thermic load of equipment

Individual harmonics V/I up to 50th Analysis of system perturbation and consumer structure

IMBALANCE ANALYSIS

Symmetrical components (positive, negative, zero sequence system) Equipment overload protection

Imbalance (derived from symmetrical components) Failure/earth fault detection

Deviation from V/I mean value

ENERGY BALANCE ANALYSIS

Meters for the demand/supply of active/reactive power, high/low tariff, meters with selectable fundamental variable

Preparation of (internal) energy billing

Power mean values active/reactive power, demand and supply, freely definable mean values (e.g. phase power, voltage, current and much more)

Determination of energy consumption versus time (load profile) for energy management or energy efficiency verification

Mean value trends Energy consumption trend analysis for load management

OPERATING HOURS

3 operating hour counters with programmable running condition Monitoring of service and maintenance intervals of equipments

Operating hours of the device

POWER QUALITY

Parameters according to IEC 61000-4-30, Class A

Chap. 5.1 Power frequency Chap. 5.2 Magnitude of supply voltageChap. 5.3 FlickerChap. 5.4 Supply voltage dips / swellsChap. 5.5 Voltage interruptionsChap. 5.7 Supply voltage unbalance Chap. 5.8 Voltage harmonics Chap. 5.9 Voltage interharmonicsChap. 5.10 Mains signalling voltage on the supply voltageChap. 5.11 Rapid voltage changes (RVC)Chap. 5.12 Underdeviation and overdeviation Chap. 5.13 Current (magnitude, harmonics, interharmonics)

• Device type PQI-A FI2 (IEC 62586-1)• Independent and accredited laboratory: Federal Institute of Metrology

METAS. Tested at both 230V / 50Hz and 120V / 60Hz.• Thanks to the certification according to IEC 62586-2 (standard for

verifying compliance with IEC 61000-4-30) the device can serve as a reliable and comparable source of information for regulatory agencies, for negotiations with energy suppliers or for internal quality control.

• Generation of compliance reports by means of the device website.• Improving the quality and reliability of the mains supply.• Identifying causes of disruptions.



MONITORING AND ALARMING

The instrument supports the on-site analysis of acquired measured data in order to initiate directly immediate or delayed actions. This facilitates the protection of equipment and also monitoring of service intervals.

The following items are available:

• 12 limit values• 8 monitoring functions with 3 inputs each• 1 collective alarm as a combination of all monitoring functions• 3 operating hourcounters with definable running conditions

The available digital outputs may be used directly for the transmission of limit values and monitoring functions as well as the resettable summary alarm.

A text may be allocated to each monitoring function and can be used for both the alarm and event list in the data logger.

DATA RECORDING

Apart from the automatic recording of power quality statistics, the high-performance data logger provides the following recording options:

• PERIODIC DATA

This feature allows to record the time course of measured variables. Averaged measurements or meter contents serve as base and are saved in regular intervals. Typical applications are the acquisition of load profiles (intervals of 10s to 1h) or the determination of the energy consumption from the difference of meter readings. For both categories pre-defined courses are available, based on the system power values, and as well courses for freely selectable basic quantities. For further processing periodic data can be exported in Excel format for a definable time range.

• EVENTS

Here the occurence of events or alarms is recorded in form of a list with time informa-tion. A distinction is made between self-defined events (such as ON/OFF of limit states or monitoring functions) which the user can classify as alarm or event and the so-called operator list in which system events such as changes of the device configuration, reset operations, powering the device and many more are held.

• PQ EVENTS

The occurrence of monitored PQ events is available in list form with the most important information about the events. Each entry can be directly selected to switch to the graphical event presentation. There the courses of the RMS half-cycle values and the waveshape during the disturbance are available, divided into presentations of all voltages, all currents and mixed displays.

Event lists, PQ event recordings, mean value courses (load profiles) and meter readings may be displayed directly at the device or via the device webpage.


POWER QUALITY

OPERATION AND ANALYSIS

OPERATIONThe local operation at the device itself and the access via web interface are structured identically. One can access the available measured data, parametrise the instrument or use the service functions via the language-specific, topically structured menu navigation. The status bar at the top right, uniformly shows the statuses of alarm monitoring, the password protection system, the data recording and the UPS as well as time and date.

Apart from the details of the PQ statistics, all data are available via both the local GUI and the WEB interface of the device.

PQ EASY-REPORT

CERTIFIED POWER QUALITY MONITORING

• PDF creation via WEB interface of the device• Selectable report duration • Selectable report scope (overview, statistic details, event overview)• Direct compliance assessment of standards EN 50160, IEC 61000-2-2 / 2-4 / 2-12, GB/T, IEEE 519 or customer specific limits• Customer specific logo in the report

• Independent certification by Federal Institute of Metrology • Device type PQI-A FI2 acc. IEC 62586-1• Proven at 230V / 50 Hz and 120V / 60Hz• Flicker meter class F1• Flagging concept: Multiphase approach in accordance with IEC 61000-4-30

Thanks to the certification according to IEC 62586-2 (standard for verifying compliance with IEC 61000-4-30) the device can serve as a reliable and comparable source of information for regulatory agencies, for negotiations with energy suppliers or for internal quality control.

Certified by


TECHNICAL DATA

INPUTSNOMINAL CURRENT 1 … 5 A (max. 7.5 A) Maximum 7.5 AOverload capacity 10 A permanent 100 A, 5x1 s, interval 300 s

NOMINAL VOLTAGE 57.7 … 400 VLN, 100 … 693 VLL

Maximum PQ3K: 480 VLN, 832 VLL (sinusoidal) PQ5K: 520 VLN, 900 VLL (sinusoidal)Overload capacity PQ3K: 480 VLN, 832 VLL permanent PQ5K: 520 VLN, 900 VLL permanent 800 VLN, 1386 VLL, 10x1 s, interval 10 sNominal frequency 42 … 50 … 58 Hz, 50.5 … 60 … 69.5 Hz

Sampling rate 18 kHz

POWER SUPPLY VARIANTS Nominal voltage 100...230 V AC/DC (PQ5K) 110…230 V AC, 130…230 V DC (PQ3K) 110…200 V AC, 110…200 V DC (PQ3K) 24…48 V DC (PQ3K / PQ5K) Consumption ≤ 27 VA, ≤ 12 W (PQ5K); ≤ 30 VA, ≤ 13 W (PQ3K)

UNINTERRUPTIBLE POWER SUPPLY (UPS) Type (3.7 V) VARTA Easy Pack EZPAckL, UL listed MH16707TYPES OF CONNECTION • Single phase or split phase (2-phase system)• 3 or 4-wire balanced load• 3-wire balanced load [2U, 1I] • 3-wire unbalanced load, Aron connection• 3 or 4-wire unbalanced load• 4-wire unbalanced load, Open-Y

I/O-INTERFACEANALOG OUTPUTS (optional)Linearisation Linear, kinkedRange ± 20 mA (24 mA max.), bipolarAccuracy ± 0.2 % von 20 mABurden ≤ 500 Ω (max. 10 V/20 mA)

RELAYS (optional) Contacts Changeover contactLoad capacity 250 V AC, 2 A, 500 VA; 30 V DC, 2 A, 60 W

DIGITAL INPUTS PASSIVENominal voltage 12/24 V DC (30 V max.)

DIGITAL INPUTS ACTIVE (optional)Open circuit voltage ≤ 15 V

DIGITAL OUTPUTS 2, StandardNominal voltage 12/24 V DC (30 V max.)

FAULT CURRENT MONITORING For grounded systems (optional)Number of meas. channels 2 (2 measurement ranges each)

Measurement range 1 (1A) Earth current measurement• Measuring transformer 1/1 up to 1/1000 A • Alarm limit 30 mA up to 1000 A

Measurement range 2 (2mA) RCM with connection monitoring

• Measuring transformer Residual current transformer 500/1 up to 1000/1 A • Alarm limit 30 mA up to 1 A

TEMPERATURE INPUTS (optional)

Number of channels 2Measurement sensor Pt100 / PTC; 2-wire

BASIC UNCERTAINTY ACCORDING IEC/EN 60688Voltage, current ±0.1 % Power ±0.2 %Power factor ±0.1°Frequency ±0.01 HzImbalance U, I ±0.5 %Harmonic ±0.5 %THD U, I ±0.5 %Active energy Class 0.5S (IEC/EN 62 053-22)Reactive energy Class 0.5S (IEC/EN 62 053-24)

INTERFACESETHERNET StandardPhysics Ethernet 100Base TX; RJ45 socketMode 10/100 MBit/s, full/half duplex, autonegotiationProtocols Modbus/TCP, http, NTP (time synchronisation)

IEC61850 optionalPhysics Ethernet 100BaseTX, RJ45 sockets, 2 portsMode 10/100 Mbit/s, full/half duplex, auto-negotiationProtocol IEC61850, NTP

PROFINET IO optionalConformance class CC-BPhysics Ethernet 100BaseTX, RJ45-Buchsen, 2 portsMode 10/100 Mbit/s, full/half duplex, auto-negotiation Protocol PROFINET, LLDP, SNMP

MODBUS/RTU Standard (PQ5K), optional (PQ3K)Physics RS-485, max. 1200 m (4000 ft)Baud rate 9.6 to 115.2 kBaud

TIME REFERENCE Internal clockClock accuracy ± 2 minutes/month (15 to 30°C)Synchronisation via NTP server or GPS

ENVIRONMENTAL CONDITIONS, GENERAL INFORMATIONOperating temperature without UPS: –10 up to 15 up to 30 up to + 55 °C with UPS: 0 up to 15 up to 30 up to + 35 °CStorage temperature –25 to +70 °CTemperature influence 0.5 x basic uncertainty per 10 KLong-term drift 0.5 x basic uncertainty per yearOthers Application group II (IEC/EN 60 688)Relative air humidity <95 % without condensationOperating altitude ≤2000 m above NN Only to be used in buildings!

MECHANICAL PROPERTIESHousing material Polycarbonate (Makrolon)Flammability class V-0 according UL94, self-extinguishing, not dripping, free of halogenWeight 800 g (PQ3K), 600g (PQ5K)

SAFETYCurrent inputs are galvanically isolated from each other.Protection class II (protective insulation, voltage inputs via protective impedance)Pollution degree 2Protection IP54 (front), IP30 (housing), IP20 (terminals)Measurement category U: 600 V CAT III, I: 300 V CAT III



POWER QUALITY

Panel cut-out

Maximum one extension with analog outputs may be provided per device.

EXTENSIONS PQ3K

ORDER CODE PQ3K- .... ....

1. BASIC DEVICE FOR PANEL-MOUNTINGWith TFT display 1

2. INPUT | FREQUENCY RANGECurrent transformer inputs, 42 … 50/60 … 69,5 Hz 1

3. POWER SUPPLYNominal voltage 110 … 230 V AC, 130 … 230 V DC 1Nominal voltage 24 … 48 V DC 2Nominal voltage 110 … 200 V AC, 110 … 200 V DC 3

4. BUS CONNECTIONEthernet (Modbus/TCP protocol+web server) 1Ethernet (Modbus/TCP+web server)+RS485 (Modbus/RTU) 2

5. EXTENSION 1Without 02 relays 12 analog outputs, bipolar (± 20 mA) 24 analog outputs, bipolar (± 20 mA) 34 digital inputs passive 44 digital inputs active 5Fault current detection, 2 channels 6GPS connection module 7Temperature monitoring, 2 channels C

6. EXTENSION 2Without 02 relays 12 analog outputs, bipolar (± 20 mA) 24 analog outputs, bipolar (± 20 mA) 34 digital inputs passive 44 digital inputs active 5Fault current detection, 2 channels 6GPS connection module 7Profinet interface AIEC61850 interface BTemperature monitoring, 2 channels C

7. EXTENSION 3Without 02 analog outputs bipolar (± 20 mA) 24 analog outputs bipolar (± 20 mA) 34 digital inputs passive 44 digital inputs active 5Fault current detection, 2 channels 6Uninterruptible power supply 8Temperature monitoring, 2 channels C

8. TEST CERTIFICATEWithout 0Test certificate in German DTest certificate in English E

ORDER CODE PQ5K- .... .... .

1. BASIC DEVICE FOR TOP-HAT RAIL MOUNTINGWithout display 0With TFT display 1

2. INPUT | FREQUENCY RANGECurrent transformer inputs, 42 … 50/60 … 69,5 Hz 1

3. POWER SUPPLYNominal voltage 100 … 230 V AC/DC 1Nominal voltage 24 … 48 V DC 2

4. BUS CONNECTIONEthernet (Modbus/TCP+web server) + RS485 (Modbus/RTU) 1

5. UNINTERRUPTIBLE POWER SUPPLYWithout 0With uninterruptible power supply 1

6. EXTENSION 1Without 02 relays 12 analog outputs, bipolar (± 20 mA) 24 analog outputs, bipolar (± 20 mA) 34 digital inputs passive 44 digital inputs active 5Fault current detection, 2 channels 6GPS connection module 7Profinet interface AIEC61850 interface BTemperature monitoring, 2 channels C

7. EXTENSION 2Without 02 relays 12 analog outputs, bipolar (± 20 mA) 24 analog outputs, bipolar (± 20 mA) 34 digital inputs passive 44 digital inputs active 5Fault current detection, 2 channels 6GPS connection module 7Temperature monitoring, 2 channels C

8. TEST CERTIFICATEWithout 0Test certificate in German DTest certificate in English E

DIMENSIONAL DRAWING PQ3K

ACCESSORIES ARTICLE NO

Documentation on USB stick 156 027Interface converter USB <> RS485 163 189GPS receiver 16x-LVS, configured 181 131Transformers for fault current detection see accessory current transformers

DIMENSIONAL DRAWING PQ5K

70 mm 160 mm

110 m

m

Dranetz Technologies1000 New Durham Road | Edison, NJ 08817 | USATEL 732.287.3680 | FAX 732.248.1834

dranetz.com | [email protected] Subj

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power quality monitoring · meters for the demand/supply of active/reactive power, high/low tariff,...

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